Articles | Volume 19, issue 11
https://doi.org/10.5194/acp-19-7487-2019
https://doi.org/10.5194/acp-19-7487-2019
Research article
 | 
05 Jun 2019
Research article |  | 05 Jun 2019

Contrasting stable water isotope signals from convective and large-scale precipitation phases of a heavy precipitation event in southern Italy during HyMeX IOP 13: a modelling perspective

Keun-Ok Lee, Franziska Aemisegger, Stephan Pfahl, Cyrille Flamant, Jean-Lionel Lacour, and Jean-Pierre Chaboureau

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Cited articles

Aemisegger, F. and Papritz, L.: A climatology of strong large-scale ocean evaporation event. Part I: Identification, global distribution, and associated climate conditions, J. Climate, 31, 7287–7312, https://doi.org/10.1175/JCLI-D-17-0591.1, 2018. 
Aemisegger, F., Spiegel, J. K., Pfahl, S., Sodemann, H., Eugster, W., and Wernli, H.: Isotope meteorology of cold front passages: A case study combining observations and modelling, Geophys. Res. Lett., 42, 5652–5660, https://doi.org/10.1002/2015GL063988, 2015. 
Aemisegger, F. and Sjolte, J.: A climatology of strong large-scale ocean evaporation event. Part II: Relevance for the deuterium excess signature of the evaporation flux, J. Climate, 31, 7313–7336, https://doi.org/10.1175/JCLI-D-17-0592.1, 2018. 
Barthlott, C. and Davolio, S.: Mechanisms initiating heavy precipitation over Italy during the HyMeX Special Observation Period 1: A numerical case study using two mesoscale models, Q. J. Roy. Meteor. Soc., 142, 238–258, https://doi.org/10.1002/qj.2630, 2015. 
Blossey, P. N., Huang, Z., and Romps, D. M.: Isotopic composition of water in the tropical tropopause layer in cloud-resolving simulations of an idealized tropical circulation, J. Geophys. Res., 115, D24309, https://doi.org/10.1029/2010JD014554, 2010. 
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Our study is the first study to investigate the potential benefit of stable water isotopes (SWIs) in the context of a heavy precipitation event in the Mediterranean. As such, our study provides a proof of concept of the usefulness of SWI data to understand the variety of origins and moisture processes associated with air masses feeding the convection over southern Italy.
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